Bundesliga side Union Berlin have quickly found a successor for striker Taiwo Awoniyi, with Swiss league top scorer Jordan Siebatcheu joining from Young Boys Bern. Union announced the deal for the 26-year-old United States forward in a statement on Thursday without going into specifics. He also goes by the name Jordan Pefok. Nigeria’s Awoniyi, a star for Union last term, signed a five-year contract with promoted Premier League side Nottingham Forest just under a week ago. Siebatcheu scored 22 goals for Bern last season and was also a goal machine at his previous clubs. After his family moved f…